cobalt metal compounds

(1) cobalt oxide:
Oxalic acid is usually used as raw materials cobalt or cobalt carbonate pumping by 500-600 ℃ calcined cobalt oxide obtained, the main reaction is as follows: CoC2O4 == CoO + CO + CO2 CoCO3 == CoO + CO2
(2) cobalt hydroxide:
Usually in solution or cobalt sulfate cobalt chloride solution using sodium hydroxide solution and obtained, the main reaction is as follows: cobalt
Co2 + +2 OH-== Co (OH) 2 Co (OH) 2 + O2 +2 H2O == 4Co (OH) 3
(3) Cobalt chloride:
Cobalt metal powder is usually used with dilute hydrochloric acid into the cobalt chloride solution, and then obtained by evaporation and crystallization of cobalt chloride crystals, the main reaction is as follows:
Co + HCl — COCl2 Co + H2SO4 — COSO4
(4)cobalt sulfate:
Usually oxidized cobalt as raw material, sulfuric acid dissolved powder obtained by evaporation and crystallization by the color of the cobalt sulfate crystal, the main reaction is as follows: CoO + H2SO4 == CoSO4 + H2O
(5) cobalt carbonate:
Usually available in cobalt chloride solution or sulfuric acid solution using sodium carbonate solution of sodium cobalt precipitate obtained, the main reaction is as follows: CoCl2 + Na2CO3 == CoCO3 +2 NaCl
(6) cobalt oxalate:
Usually in solution or cobalt sulfate cobalt chloride solution using ammonium oxalate solution precipitate obtained, the main reaction is as follows: (NH4) 2C2O4 + CoCl2 == CoC2O4 +2 NH4Cl